import React from 'react';
import ReactDOM from 'react-dom/client';
import './index.css';
import App from './App';
// import reportWebVitals from './reportWebVitals';
import {Component} from "react"
import { BrowserRouter } from 'react-router-dom';

class Index extends Component {
    constructor() {
        super()
        this.state = {
            data:123
        }
    }

   
    render() {
        return (
            <React.Fragment>
                <App></App>
            </React.Fragment>
        )
    }
    // 生命周期
    componentDidMount() {
        console.log('hhh')
    }
}


const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(
    <BrowserRouter>
        <Index></Index>
    </BrowserRouter>
);



// // If you want to start measuring performance in your app, pass a function
// // to log results (for example: reportWebVitals(console.log))
// // or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
// // reportWebVitals();
